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Join PAF - Academic Test - Physics - Work and Energy - Quiz 2

Practice 10 high yield MCQs on Physics from Chapter Work and Energy for Academic Test. After submission, get instant results with correct answers and detailed explanations. This is Quiz 2 of the series.

11. What is the PE of a 5 kg mass lifted 2 m?



12. What is the power of a machine doing 100 J in 5 s?



13. What is the alternative formula for power?



14. What is conservation of mechanical energy?



15. What is conserved in elastic collisions?



16. What is conserved in inelastic collisions?



17. When does a dropped ball have maximum KE?



18. Is work done by gravity on a falling object positive or negative?



19. Is work done by friction positive or negative?



20. How much work is done by a person holding a heavy bag stationary?



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Instructions: Select one answer per question. After submitting, you will see your score, correct answers, and explanations.

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